[Easy to Use] The transmitter and receiver are pre-paired and tested before shipping. No setup is required—simply install and use. [Widely Used] This remote switch is suitable for industrial control and security applications, including lights, motors, remote controllers, wireless security alarms, windows, lifting equipment, electric doors, wireless door alarms, security machinery, and other similar fields. [Signal] The wireless RF signal can penetrate walls, floors, doors, and windows. Multiple units can be used in the same location. Turn the receiver on or off from any position within a reliable range of up to 164 feet (50 meters) in open area. [Learning Code] The learning code feature offers high security with a low repetition rate and supports re-learning mode. It allows deletion of old codes and programming of new ones, ensuring control even if a remote is lost. Buttons: 2 Remote Distance: 20-50m Working Frequency: 433MHz Max Load Current: 30A Encoding: Fixed code / EV1527 Color: Black Material: Plastic Package Contents: 1 x Remote Switch 2 x Remote Controls Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3cm.